JP2844063B2 - Work supply / recovery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bell-chuck system for a workpiece which simultaneously performs inner and outer diameter processing in a donut shape such as a glass center disk for a computer device. Grinding or cutting, etc.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work supply / collection device for automatically supplying a work and collecting a processed work.

[0002]

2. Description of the Related Art As the above-mentioned work supply / recovery apparatus, the present applicant discloses an apparatus described in Japanese Utility Model Publication No. 6-30357. As shown in FIG. 4, a parallel chuck 116 is installed on a drive shaft 117 of a linear drive unit 118, and a supply vacuum pad 113 and a recovery vacuum pad 115 are provided on a pair of arms 112 and 114 of the parallel chuck 116, respectively. And the pads 113 and 115 are fixed to the fixed-side holder 119 and the movable-side holder 120 of the bell chuck.
It was made possible to enter in between.

In the above-described apparatus, the supply vacuum pad 113 is in a standby state in a state in which the work 111 is sucked before processing, the processing of the previous work is completed, and the movable holder 120 is processed. When the completed work 111a is retracted while being sucked and held, the drive shaft 117 is driven forward by the action of the linear drive unit 118, and the two arms 1 are moved through the parallel chuck 116.
12, 114 are advanced, and the center of both pads 113, 115 coincides with the axis of each of the holders 119, 120.

Then, the parallel chuck 116 performs an opening operation,
When the two arms 112 and 114 are driven in the separating direction, the work 111 before processing is moved between the supply vacuum pad 113 and the suction surface of the fixed holder 119, and the processed work is also performed. Reference numerals 111a are simultaneously held between the suction surface of the movable holder 120 and the recovery vacuum pad 115, respectively. There, work 1 before processing
11 and the processed work 111a are delivered.

[0005]

As described above, in the above apparatus, both arms 112 and 11 of the parallel chuck 116 are used.
4 simultaneously move the same distance in opposite directions. However, there is no problem if the distance between the holder 119 and the supply vacuum pad 113, the distance between the holder 120 and the recovery vacuum pad 115, and the thickness of the work are constant. Actually, the above interval slightly changes, and the size of the work is not constant. Therefore, the supply side and the recovery side are deviated on either side, and the work adsorption condition becomes non-uniform, so that an appropriate work is performed. A case where adsorption is inhibited may occur. In addition, when the work is changed, it is necessary to align the apparatus, but the loss time is large and the productivity is significantly impaired.

Further, in the case of the above device, the vacuum pad 1
Reference numerals 13 and 115 denote arms 112 and 1 which are spaced apart from each other.
14, the distance d between the suction surfaces of the vacuum pads 113 and 115 is not small.
The distance between the fixed-side holder 119 and the movable-side holder 120 must be increased by the distance corresponding to the movement distance of the arms 112 and 114, and the alignment between the holders 119 and 120 becomes difficult. There is.

[0007] Since the above-mentioned apparatus has such a problem, the present invention does not have such a problem, that is, the operation on the supply side of the work before processing and the recovery of the processed work. The operation of the suction side can be performed independently of each other, so that appropriate work suction can be performed according to the situation, and the distance between the suction surfaces of the suction pads on the supply side and the recovery side can be greatly reduced. Accordingly, it is an object of the present invention to provide a work supply / recovery device which shortens the distance between the holders of a bell chuck and facilitates axis alignment between the holders.

[0008]

According to the present invention, there is provided a chuck mounting base which is driven linearly by a main cylinder, an LM guide is arranged in a width direction of an upper surface thereof, and the LM guide is arranged on the LM guide along the LM guide. For moving work supply and work
A chuck support for collecting the chucks is provided, and a supply cylinder and a collecting cylinder for moving the chuck supports in the width direction are installed on the chuck mounting base. Up and down one tip
The other end of the chuck support is vertically aligned so as to be accommodated therein, and one suction pad is provided at each of the two upper and lower ends. The above-mentioned problem has been solved by a work supply / recovery device comprising two suction pads disposed at the front end of the receiving end in the longitudinal direction.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the accompanying drawings (FIGS. 1 to 3). In the figure, reference numeral 1 denotes a rodless type main cylinder, which is covered with a bellows cover-2. Reference numeral 3 denotes a base linearly driven by the main cylinder 1.
A chuck mounting base 4 extending in the length direction of the main cylinder 1 is fixed to the support.

At the tip of the chuck mounting base 4, a chuck and a chuck opening / closing mechanism are installed. That is, 5, 6
Are LM guides arranged in the width direction of the chuck mounting base 4, to which chuck supports 7, 8 are fixed, respectively. One chuck support 7 is for supplying a work before processing to a grinding machine or the like, and the other chuck support 8 is for collecting a processed work. is there.

On the chuck mounting base 4, a supply cylinder 9 for driving the chuck support 7 in the width direction of the chuck mounting base 4 and a chuck support 8 are also mounted on the chuck mounting base 4. And a collection cylinder 10 for driving in the width direction of the blade 4. On the chuck mounting base 4, stoppers 11 and 12 for regulating the moving ends of the chuck supports 7 and 8 may be provided. The stoppers 11 and 12 are of a screw type and can finely adjust the regulating position by moving forward and backward. In practice, however, the movements of the chuck supports 7 and 8 are automatically adjusted by air pressure. Therefore, the stoppers 11 and 12 are not usually required.

The distal ends of the chuck supports 7 and 8 are each in the shape of a hollow vertical plate, and one of the chuck supports (the chuck support 8 in the figure) is divided into upper and lower two parts in a normal communication state. In the meantime, the other chuck support (the chuck support 7 in the figure) is accommodated, and the respective chuck supports are aligned in a vertical line at the time of retreat (the state of FIG. 1). At the tip of the chuck support 7, two supply suction pads 13 are provided in the front-rear direction at an interval corresponding to the diameter of the work to be sucked, and the chuck is divided into two. The support 8 is provided with one recovery suction pad 14 at each end. The interval between the two collecting suction pads 14 also corresponds to the diameter of the work to be sucked.

Reference numerals 15 and 16 denote vacuum tube connecting members for connecting a vacuum tube extending from a vacuum pump (not shown). The vacuum tube connecting member 15 is disposed in a hollow space at the tip end of the chuck support 7. The vacuum tube connecting member 16 is disposed in one of the two hollow cavities communicating with each other of the chuck support 8.

Reference numerals 18 and 19 denote struts of the main cylinder 1.
The micrometer 18 is for backward positioning (rightward moving end in FIG. 1), and the micrometer 19 is for forward positioning (leftward moving end in FIG. 1). . Reference numeral 20 denotes a plurality of tapes at the tip.
A centering chuck having a centering pin 20a, which is advanced by the action of the centering cylinder 21, and
Enters the circular hole of the donut-shaped work adsorbed on the
The work is centered by the centering pin 20a. The centering cylinder 21 is fixed to the rotating shaft of the rotary actuator 22. After the centering cylinder 21 is retracted after the centering operation, the centering cylinder 21 rotates 90 degrees upward by the action of the rotary actuator 22. And waits (state of FIG. 3).

Incidentally, on both sides of the chuck supports 7 and 8,
A mechanism for taking out a work from a work stocker for storing a work before processing and sucking the work to a supply suction pad 13 and a mechanism for collecting a processed work from a collection suction pad 14 are added. However, since these mechanisms are not directly related to the present invention, illustration and description are omitted.

In the apparatus according to the present invention, after the supply suction pad 13 sucks and centers the work before processing, the chuck supports 7 and 8 perform a retreating operation to be aligned in a vertical line. In a standby state, the distance between the suction surfaces of the suction pad 13 for supply and the suction pad 14 for collection is minimized, and this distance is about half or less of the distance d in the case of the conventional apparatus shown in FIG. Becomes

When the working of the previously supplied work is completed and the work is sucked to the retraction bell clamp side, the main cylinder 1 moves forward from this standby state, and the pads 13 and 14 are moved to the working machine. -Holder. When the supply cylinder 9 is operated, the chuck support 7 is guided by the LM guide 5 and moves in a direction away from the chuck support 8, so that the work is not shown in the work holder of the processing machine.
Then, the suction state by the supply suction pad 13 is released, and the work is delivered to the work holder.

On the other hand, simultaneously with the operation of the chuck support 7, the collecting cylinder 10 also operates, and the chuck support 8 is operated.
Is moved in the direction opposite to the chuck support 7. Then, the collecting suction pad 14 is brought into contact with the other work holder of the processing machine which is in a standby state while sucking the processed work. At this point, the work suction by the work holder is released, and the work is suctioned to the collection suction pad 14 side.

When the above two work transfer operations are completed, the supply cylinder 9 and the recovery cylinder 10 immediately retreat, and then the main cylinder retreats.
The chuck supports 7, 8 return to the initial positions shown in FIG. There, a new unprocessed work is supplied to the supply suction pad 13, and a processed work is collected from the collection suction pad 14. When supplying the unprocessed work and collecting the processed work, the supply cylinder 9 and the collection cylinder 10 may be operated to move the chuck supports 7 and 8.

[0020]

The present invention is as described above, and the moving operation of the suction pad for supply and recovery is driven by separate cylinders. Therefore, the suction pad and the processing machine are arranged on the supply side and the recovery side. It has become possible to always clamp the work between the work holders at an appropriate pressure. In addition, since the chuck supports on the supply side and the recovery side are arranged in a line in a row with one of them fitted between the other, the distance between the suction surfaces of the suction pads on the supply side and the recovery side can be greatly reduced. As a result, the distance between the holders of the bell chuck is shortened, so that there is an effect that the axial alignment becomes easy. Further, even if the thickness of the work is changed, it can be used without adjusting the device as long as it is within the range of the stroke of the supply cylinder and the recovery cylinder.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment of the present invention.

FIG. 3 is a side view of an embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional work supply / recovery device.

[Explanation of symbols]

 1 Main Cylinder 4 Chuck Mounting Base 5 LM Guide 6 LM Guide 7 Chuck Support 8 Chuck Support 9 Supply Cylinder 10 Collection Cylinder 11 Stopper 12 Stopper 13 Supply Suction Pad 14 Collection Suction Pad 18 Micrometer 19 Micrometer 20 Centering chuck

Claims (3)

(57) [Claims] A chuck mounting base driven straight by a main cylinder is provided, an LM guide is arranged in a width direction of an upper surface thereof, and an LM guide is provided on the LM guide for supplying a work moving along the LM guide. Chuck support for work collection
A supply cylinder and a collection cylinder for moving each chuck support in the width direction are installed on the chuck mounting base, and one end of the chuck support is attached to the chuck support base. The chuck support is divided into two upper and lower parts so that the tip of the other chuck support fits in a vertical line, and one suction pad is provided at each of the two upper and lower tips. A work supply / recovery device comprising two suction pads disposed at the front end in the longitudinal direction. 2. The work supply and recovery device according to claim 1, further comprising a stopper for restricting an operation end of the main cylinder and a stopper for restricting an operation end of the supply and recovery cylinder. 3. A centering device for a work sucked on a suction pad of the supply chuck support is provided.
Or the work supply / recovery device according to 2.